She is very dear to us. We have been prepared to do it takes to save her life.A. whichever

问题补充：

She is very dear to us. We have been prepared to do it takes to save her life.

A. whichever

B. however

C. whatever

D. whoever

答案：

A. whichever

B. however

(答案→)C. whatever

D. whoever

解析：名词性从句的引导词。句意为：她对我们来说是非常宝贵，我们已经准备好做一切来拯救她的生命。